diff --git a/core/themes/bartik/css/base/elements.css b/core/themes/bartik/css/base/elements.css
index 8810d9d..388cc2a 100644
--- a/core/themes/bartik/css/base/elements.css
+++ b/core/themes/bartik/css/base/elements.css
@@ -36,40 +36,40 @@ h3,
 h4,
 h5,
 h6,
-.header-a,
-.header-b,
-.header-c,
-.header-d,
-.header-e,
-.header-f {
+.heading-a,
+.heading-b,
+.heading-c,
+.heading-d,
+.heading-e,
+.heading-f {
   margin: 1.0em 0 0.5em;
   font-weight: inherit;
 }
 h1,
-.header-a {
+.heading-a {
   font-size: 1.357em;
   color: #000;
 }
 h2,
-.header-b {
+.heading-b {
   font-size: 1.143em;
 }
 h3,
-.header-c {
+.heading-c {
   font-size: 1.092em;
 }
 h4,
-.header-d {
+.heading-d {
   font-size: 1.05em;
 }
 h5,
-.header-e {
+.heading-e {
   font-size: 0.889em;
   text-transform: uppercase;
   letter-spacing: 0.1em;
 }
 h6,
-.header-f {
+.heading-f {
   font-size: 0.67em;
   text-transform: uppercase;
   letter-spacing: 0.1em;